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Magnetic gearbox

A speed changer and magnet technology, applied in the field of radial spaced magnetic speed changers, can solve the problems of not being able to change the speed ratio continuously, changing the speed ratio discontinuously, etc.

Active Publication Date: 2020-12-08
HITACHI METALS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, although the magnetic multi-stage transmission mechanism of Patent Document 1 can change the speed ratio discontinuously, there is a problem that the speed ratio cannot be changed continuously.

Method used

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Experimental program
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Embodiment approach 1

[0033] figure 1 It is a side sectional view showing the structure of the magnetic transmission of Embodiment 1, figure 2 It is the II-II line sectional view of the magnetic speed changer, image 3 It is the III-III line sectional view of the magnetic transmission. The magnetic variator according to Embodiment 1 of the present invention is a radially spaced magnetic gear device for outputting input torque at a variable speed. The magnetic speed change machine includes: a disc-shaped inner rotor (inner magnet row) 1 coaxially arranged, an outer rotor (outer magnet row) 2, and a magnetic field modulation stator (magnetic field adjusting stator) arranged between the inner rotor 1 and the outer rotor 2. body row) 3. The magnetic transmission further includes an input shaft (input member) 10 for inputting torque to the magnetic transmission and an output shaft (output member) 20 for outputting the shifted torque. The input shaft 10 and the output shaft 20 are formed of non-magn...

Embodiment approach 2

[0069] Figure 5 It is a side sectional view showing the structure of the magnetic transmission of Embodiment 2. The magnetic transmission of Embodiment 2 includes the same inner rotor 1, outer rotor 2, and field modulating stator 3 as Embodiment 1, and further includes an input rotation speed detection unit 51 for detecting the rotation speed of the input shaft 10, and a unit for detecting the rotation speed of the output shaft 20. The output rotation speed detection part 52 and the control part 6 which controls the operation|movement of the actuator 4 based on the detected rotation speed are output.

[0070] The input rotational speed detection part 51 includes, for example: a magnetic pickup that sends a signal proportional to the rotational speed of the input shaft 10, a non-contact sensor including a Hall element, and a counting circuit that measures the number of pulses from the non-contact sensor. The detection unit 51 calculates the rotational speed of the input shaft...

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Abstract

A magnetic transmission is provided with: an inner rotor; an outer rotor; and a magnetic-field-modulating stator disposed coaxially between the inner rotor and the outer rotor. The inner rotor is provided with a first magnet array and a second magnet array arranged in the direction of the central axis and disposed at different pitches along the circumferential direction. The outer rotor is provided with a magnet array disposed along the circumferential direction. The magnetic-field-modulating stator is provided with a first magnetic body array and a second magnetic body array opposing the first magnet array and the second magnet array, respectively. Further, by moving the inner rotor and the magnetic-field-modulating stator in the direction of the central axis while holding the opposing relationship between the first magnetic body array and the second magnetic body array, and the first magnet array and the second magnet array, the position where the outer rotor, and the first magnet array and the second magnet array oppose each other is changed continuously.

Description

technical field [0001] The invention relates to a radial interval magnetic speed changer capable of continuously changing the speed ratio. Background technique [0002] Patent Document 1 discloses a radially spaced magnetic multi-stage transmission mechanism capable of discontinuously switching gear ratios. The magnetic multi-stage transmission mechanism includes a plurality of disk-shaped inner rotors arranged apart from each other in the direction of the rotation axis, a plurality of annular outer rotors arranged on the outer peripheral side of each inner rotor, and a plurality of ring-shaped outer rotors arranged between the inner rotor and the outer rotor. Between the ring-shaped stator. The inner rotor is arranged on the input shaft, and the plurality of inner rotors are respectively arranged with different numbers of magnetic pole pairs in the circumferential direction. The outer rotor is arranged on the output shaft, and the plurality of outer rotors are respectivel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H49/00
CPCF16H49/00H02K21/024H02K49/102H02K49/106H02K2213/09H02K11/215
Inventor 木本昭洋
Owner HITACHI METALS LTD
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